 # Polygons

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• Q1

In the given figure, value of x° + y° + z° is

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360°

##### Explanation:

x° + 60° + z° + 40° + 80° + y°= 180° × 3

(Sum of three linear angles)

x° + y° + z °= 540° – 180°

x° + y° + z °= 360°

• Q2

The angle formed between any side of a polygon and extended adjacent side outside the polygon is called an

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exterior angle of the polygon.

##### Explanation:

The angle formed between any side of a polygon and extended adjacent side outside the polygon is called an exterior angle of the polygon. • Q3

Out of the following figure, the regular polygon is

Marks:1 ##### Explanation:

A closed figure whose all sides are equal is called regular polygon. So, option (a) is correct.

• Q4

An interior angle of a polygon is 100°. The measurement of its adjacent exterior angle will be...

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80°.

##### Explanation:

An exterior angle + adjacent interior angle = 180°

exterior angle = 180 – 100°

= 80°

• Q5

Out of the following figures, the regular polygon is

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